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AIIMS2018Chemistry-Inorganic Chemistry

AIIMS 2018 Chemistry Sulfur Compounds MCQ Question

Type: MCQ-conceptual-Medium-Class 11

In the following sequence of reaction, identifying the compounds (A), (B), (C) and (D):

Na2CO3→SO2(A)→Na2CO3(B)→S / Heat(C)→AgNO3(D)\text{Na}_2\text{CO}_3 \xrightarrow{\quad\text{SO}_2\quad} \text{(A)} \xrightarrow{\quad\text{Na}_2\text{CO}_3\quad} \text{(B)} \xrightarrow{\quad\text{S / Heat}\quad} \text{(C)} \xrightarrow{\quad\text{AgNO}_3\quad} \text{(D)}

A

Na2SO3\text{Na}_2\text{SO}_3, NaHSO3\text{NaHSO}_3, Na2S\text{Na}_2\text{S}, Ag2S\text{Ag}_2\text{S}

B

NaHSO3\text{NaHSO}_3, Na2SO3\text{Na}_2\text{SO}_3, Na2S2O3\text{Na}_2\text{S}_2\text{O}_3, Ag2S\text{Ag}_2\text{S}

C

NaHSO3\text{NaHSO}_3, Na2SO4\text{Na}_2\text{SO}_4, Na2S\text{Na}_2\text{S}, Ag2O\text{Ag}_2\text{O}

D

NaSO3\text{NaSO}_3, Na2SO4\text{Na}_2\text{SO}_4, Na2S2O\text{Na}_2\text{S}_2\text{O}, Ag\text{Ag}

Correct Answer

Option D

Detailed Explanation

Option D is correct because it accurately represents the final product of the reaction sequence involving sodium thiosulfate (Na₂S₂O₃) reacting with silver nitrate (AgNO₃), which produces silver sulfide (Ag₂S) and sulfuric acid (H₂SO₄). The other options are incorrect as they likely misrepresent the stoichiometry or the products formed in the reactions provided, failing to account for the correct balancing of elements or the nature of the resulting compounds. Understanding these reactions emphasizes the importance of balancing chemical equations and recognizing the relationships between reactants and products in redox processes.

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